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<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>Document</title>
	<style type="text/css">
		#box{
			width: 145px;
			height: 72px;
			margin-left: 5px;
		}
		#boxda{
			width: 1520px;
			height: 80px;

		}
	</style>
	<script type="text/javascript">
	window.onload=function(){
		box = document.getElementById('box');

		width = window.getComputedStyle ?window.getComputedStyle(box,null).width :box.currentStyle.width;
		height = window.getComputedStyle ? window.getComputedStyle(box,null).height :box.currentStyle.height;

     	width = parseInt(width);
     	height = parseInt(height);

     		x=0;
     	function dong (){
     		if (x==0) {
     			margin-left+=10;
     		}
     		box.style.margin-left

     	}





	}
	</script>
</head>
<body>
	<div id='boxda'>
	<div id='box'><img src="./dogzuo.gif" alt=""></div>
	</div>
</body>
</html>